package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.JwtClaimsConstant;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordEditFailedException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    @Autowired
    HttpServletRequest request;

    @Autowired
    JwtProperties jwtProperties;






    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();
        password = password+username;
        // TODO 后期需要进行md5加密，然后再进行比对
        //MD5加密
       password= DigestUtils.md5DigestAsHex(password.getBytes());
        System.out.println(password);
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void modifyPassword( String newPassword, String oldPassword) {

         Integer userId = Math.toIntExact(BaseContext.getCurrentId());

        Employee employee=employeeMapper.getById(userId);
        String username = employee.getUsername();

        oldPassword=oldPassword+username;
        oldPassword = DigestUtils.md5DigestAsHex(oldPassword.getBytes());
        String password = employee.getPassword();
        Long id = BaseContext.getCurrentId();

        //新密码加密
        newPassword=newPassword+username;
        newPassword=DigestUtils.md5DigestAsHex(newPassword.getBytes());

        Employee newEmployee = Employee.builder()
                .password(newPassword)
                .id(id)
                .build();
        if (password.equals(oldPassword)){
            employeeMapper.modifyPassword(newEmployee);
        }else {
            throw new PasswordEditFailedException("旧密码错误");
        }


    }

    @Override
    public void modifyStatus(Integer status, Integer id) {
        Long BeModifiedId = Long.valueOf(id.toString());
        Long modifyId = BaseContext.getCurrentId();
        Employee employee = Employee.builder()
                .id(BeModifiedId)
                .status(status)
                .build();
        employeeMapper.modifyStatus(employee);
    }

    @Override
    public PageResult selectByPage(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        List<Employee> employees=employeeMapper.selectByPage(employeePageQueryDTO.getName());
        Page<Employee> employeePage = (Page<Employee>) employees;
        PageResult pageResult = new PageResult(employeePage.getTotal(), employeePage.getResult());
        return pageResult;
    }

    @Override
    public void insert(EmployeeDTO employeeDTO) {
        String username = employeeDTO.getUsername();
        String password ="123456"+username;
        password=DigestUtils.md5DigestAsHex(password.getBytes());

        Long id =BaseContext.getCurrentId();
        Employee employee = Employee.builder()
                .password(password)
                .status(0)
                .build();
        BeanUtils.copyProperties(employeeDTO,employee);
        employeeMapper.insert(employee);
    }

    @Override
    public Employee selectById(Integer id) {

        Employee employee=employeeMapper.selectById(id);
        employee.setPassword("******");
        return employee;
    }

    @Override
    public void update(EmployeeDTO employeeDTO) {

        Employee employee = Employee.builder().build();

        BeanUtils.copyProperties(employeeDTO,employee);

        employeeMapper.update(employee);

    }


}
